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BigWalleye · 03-18-14, 07:15 AM

No,contact reports always provide a relative bearing. A true bearing would be a bearing WRT true North being zero degrees. This has nothing to do with heading, which is the direction a ship is moving WRT true North equals zero degrees..

A target is sighted bearing 090. This bearing is RELATIVE, so the target is directly on the sub's starboard beam. (To the landlubber's right!) The sub's HEADING is 335. so the target bears 045 TRUE. To plot the target's position on the nav chart, you will need the TRUE bearing, because the nav tools are always aligned to true North. Incidently, the target might be HEADING 180 (or anything else). Heading and bearing are in no way related.

03-18-14, 07:15 AM	#2
BigWalleye Sea Lord Join Date: Jul 2012 Location: On the Eye-lond, mon! Posts: 1,987 Downloads: 465 Uploads: 0	No,contact reports always provide a relative bearing. A true bearing would be a bearing WRT true North being zero degrees. This has nothing to do with heading, which is the direction a ship is moving WRT true North equals zero degrees.. A target is sighted bearing 090. This bearing is RELATIVE, so the target is directly on the sub's starboard beam. (To the landlubber's right!) The sub's HEADING is 335. so the target bears 045 TRUE. To plot the target's position on the nav chart, you will need the TRUE bearing, because the nav tools are always aligned to true North. Incidently, the target might be HEADING 180 (or anything else). Heading and bearing are in no way related. Last edited by BigWalleye; 03-18-14 at 07:25 AM.